After your done, take your time bleeding the coolant. It's a pain. Don't drive too far & if the temp starts to go past the middle, get home & add coolant. KEEP YOU EYE ON THE TEMP GAUGE! It takes a while for the coolant to fill all the voids & the coolant level will drop so carry some extra anti-freeze in your car for a week.
A lot of people have not had issues bleeding but it was nothing but a pain for me. Check the level frequently.